MDS PREP
In a 19-years-old patient with a swelling over the left angle of the mandible, temperature of 38 degree celcius and negative history of trauma, one should suspect
1) Spontaneous fracture of the mandible
2) Pericoronal infection
3) Mumps
4) Sjorgen"s syndrome
Oral Surgery
Answer: 2
Explanation:In this scenario, the presence of swelling and fever in a young adult, particularly in the area of the mandible, suggests a pericoronal infection, which is often associated with the eruption of third molars (wisdom teeth). The lack of trauma further supports this diagnosis, as pericoronal infections are common in the absence of direct injury.
Alpha adrenergic agonists are used in combination with local anaesthetics to
1. Increase the rate of liver metabolism of local anaesthetic
2. Increase the concentration of LA at receptor site
3. Both the above
4. None of the above
Oral Surgery
Answer: 2
Alpha adrenergic agonists are used in combination with local anaesthetics to increase the concentration of LA at receptor site.
The alkayat and Bramley approach to the TMJ is a modification of the
1. Hemicoronal approach
2. Retroauricular approach
3. Preauricular approach
4. Risdon"s incision
Oral Surgery
Answer: 3
The alkayat and Bramley approach to the TMJ is a modification of the preauricular approach.
One wants to anaesthetise the inferior alveolar nerve at the point at which it exits from the mandibular canal, so the injection site most often located in
1. Between first and second molars inferior to the root apices
2. Between first and second molar superior to root apices
3. Between first and second premolars inferior to root apices
4. Between first and second premolars superior to root apices
Oral Surgery
Answer: 3
The inferior alveolar nerve exits the mandibular foramen and runs in the
mandibular canal before it branches off to supply the teeth, including the
second premolar. To anesthetize the nerve at this point, the injection site is
commonly located between the first and second premolars, inferior to the root
apices, where the nerve is relatively superficial and accessible.
"Ash forceps" is commonly used for
1. Extraction of lower incisor
2. Extraction of upper canines
3. Holding tissues prior to biopsy
4. Holding vascular areas during surgery
Ash forceps are commonly used for extraction of lower incisor.
Compbell line is seen in
1. Transpharyngeal view
2. Transorbital view
3. Occipitomental view
4. Towne view
Oral Surgery Answer: 3
The Campbell line is an important anatomical reference line
used in radiology, particularly in the context of the occipitomental
view (also known as the Water's view). This line is drawn from the
outer canthus of the eye to the midpoint of the maxillary sinus and is used to
assess the position of the maxillary sinuses and other related structures in the
skull.
Occipitomental view: This view is commonly used in
maxillofacial imaging to visualize the maxillary sinuses, orbits, and nasal
cavity. The Campbell line helps in evaluating the relationship of these
structures.
Transpharyngeal view: This view is used to visualize the
pharynx
Transorbital view: This view focuses on the orbits and
surrounding structures
Towne view: This view is used to visualize the occipital
bone and the base of the skull
Open reduction and internal fixation of fracture fragments in the older patients is risky because
1) Of their old age, they less likely tolerate the major procedure under general anaesthesia
2) Fixation is difficult because bone will become more dense as age advances
3) Both of the above are correct
4) None of the above are correct
Oral Surgery
Answer: 4
The risk associated with open reduction and internal fixation (ORIF) in older patients is not solely due to their age or increased bone density. It's important to consider their overall health, including potential comorbidities and reduced healing capacity. The risks might be higher due to factors like poor bone quality, increased surgical time, and the potential for complications such as infection and nonunion.
The prime purpose of bibevel chisel is
1. Split teeth
2. Sharpen the angles
3. Remove bone
4. Engage point establishment
Oral Surgery
Answer: 1
The prime purpose of bibevel chisel is to split teeth.